13738902181 has 4 divisors (see below), whose sum is σ = 13764019552. Its totient is φ = 13713784812.

The previous prime is 13738902173. The next prime is 13738902187. The reversal of 13738902181 is 18120983731.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 18120983731 = 72707 ⋅249233.

It is a cyclic number.

It is not a de Polignac number, because 13738902181 - 2³ = 13738902173 is a prime.

It is a super-2 number, since 2×13738902181² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13738902187) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12557865 + ... + 12558958.

It is an arithmetic number, because the mean of its divisors is an integer number (3441004888).

Almost surely, 2^13738902181 is an apocalyptic number.

It is an amenable number.

13738902181 is a deficient number, since it is larger than the sum of its proper divisors (25117371).

13738902181 is an equidigital number, since it uses as much as digits as its factorization.

13738902181 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25117370.

The product of its (nonzero) digits is 72576, while the sum is 43.

The spelling of 13738902181 in words is "thirteen billion, seven hundred thirty-eight million, nine hundred two thousand, one hundred eighty-one".